/**
 * turn.js 4th release
 * turnjs.com
 * turnjs.com/license.txt
 *
 * Copyright (C) 2012 Emmanuel Garcia
 * All rights reserved
 **/

(function($) {

  'use strict';
  
  var has3d,
    
    hasRot,
  
    vendor = '',
    
    version = '4.1.0',
  
    PI = Math.PI,
  
    A90 = PI/2,
  
    isTouch = 'ontouchstart' in window,
  
    mouseEvents = (isTouch) ?
      {
        down: 'touchstart',
        move: 'touchmove',
        up: 'touchend',
        over: 'touchstart',
        out: 'touchend'
      }
      :
      {
        down: 'mousedown',
        move: 'mousemove',
        up: 'mouseup',
        over: 'mouseover',
        out: 'mouseout'
      },
  
    // Contansts used for each corner
    //   | tl * tr |
    // l | *     * | r
    //   | bl * br |
  
    corners = {
      backward: ['bl', 'tl'],
      forward: ['br', 'tr'],
      all: ['tl', 'bl', 'tr', 'br', 'l', 'r']
    },
  
    // Display values
  
    displays = ['single', 'double'],
  
    // Direction values
  
    directions = ['ltr', 'rtl'],
  
    // Default options
  
    turnOptions = {
  
      // Enables hardware acceleration
  
      acceleration: true,
  
      // Display
  
      display: 'double',
  
      // Duration of transition in milliseconds
  
      duration: 600,
  
      // First page
  
      page: 1,
      
      // Enables gradients
  
      gradients: true,
  
      // Corners used when turning the page
  
      turnCorners: 'bl,br',
  
      // Events
  
      when: null
    },
  
    flipOptions = {
  
      // Size of the active zone of each corner
  
      cornerSize: 100
  
    },
  
    // Number of pages in the DOM, minimum value: 6
  
    pagesInDOM = 6,
    
  
  turnMethods = {
  
    // Singleton constructor
    // $('#selector').turn([options]);
  
    init: function(options) {
  
      // Define constants
      
      has3d = 'WebKitCSSMatrix' in window || 'MozPerspective' in document.body.style;
      hasRot = rotationAvailable();
      vendor = getPrefix();
  
      var i, that = this, pageNum = 0, data = this.data(), ch = this.children();
  
      // Set initial configuration
  
      options = $.extend({
        width: this.width(),
        height: this.height(),
        direction: this.attr('dir') || this.css('direction') || 'ltr'
      }, turnOptions, options);
  
      data.opts = options;
      data.pageObjs = {};
      data.pages = {};
      data.pageWrap = {};
      data.pageZoom = {};
      data.pagePlace = {};
      data.pageMv = [];
      data.zoom = 1;
      data.totalPages = options.pages || 0;
      data.eventHandlers = {
        touchStart: $.proxy(turnMethods._touchStart, this),
        touchMove: $.proxy(turnMethods._touchMove, this),
        touchEnd: $.proxy(turnMethods._touchEnd, this),
        start: $.proxy(turnMethods._eventStart, this)
      };
  
  
  
      // Add event listeners
  
      if (options.when)
        for (i in options.when)
          if (has(i, options.when))
            this.bind(i, options.when[i]);
  
      // Set the css
  
      this.css({position: 'relative', width: options.width, height: options.height});
  
      // Set the initial display
  
      this.turn('display', options.display);
  
      // Set the direction
  
      if (options.direction!=='')
        this.turn('direction', options.direction);
      
      // Prevent blue screen problems of switching to hardware acceleration mode
      // By forcing hardware acceleration for ever
  
      if (has3d && !isTouch && options.acceleration)
        this.transform(translate(0, 0, true));
  
      // Add pages from the DOM
  
      for (i = 0; i<ch.length; i++) {
        if ($(ch[i]).attr('ignore')!='1') {
          this.turn('addPage', ch[i], ++pageNum);
        }
      }
  
      // Event listeners
  
      $(this).bind(mouseEvents.down, data.eventHandlers.touchStart).
        bind('end', turnMethods._eventEnd).
        bind('pressed', turnMethods._eventPressed).
        bind('released', turnMethods._eventReleased).
        bind('flip', turnMethods._flip);
  
      $(this).parent().bind('start', data.eventHandlers.start);
  
      $(document).bind(mouseEvents.move, data.eventHandlers.touchMove).
        bind(mouseEvents.up, data.eventHandlers.touchEnd);
  
      // Set the initial page
  
      this.turn('page', options.page);
  
      // This flipbook is ready
  
      data.done = true;
  
      return this;
    },
  
    // Adds a page from external data
  
    addPage: function(element, page) {
  
      var currentPage,
        className,
        incPages = false,
        data = this.data(),
        lastPage = data.totalPages+1;
  
      if (data.destroying)
        return false;
  
      // Read the page number from the className of `element` - format: p[0-9]+
  
      if ((currentPage = /\bp([0-9]+)\b/.exec($(element).attr('class'))))
        page = parseInt(currentPage[1], 10);
  
      if (page) {
        
        if (page==lastPage)
          incPages = true;
        else if (page>lastPage)
          throw turnError('Page "'+page+'" cannot be inserted');
  
      } else {
        
        page = lastPage;
        incPages = true;
  
      }
  
      if (page>=1 && page<=lastPage) {
  
        if (data.display=='double')
          className = (page%2) ? ' odd' : ' even';
        else
          className = '';
  
        // Stop animations
        if (data.done)
          this.turn('stop');
  
        // Move pages if it's necessary
        if (page in data.pageObjs)
          turnMethods._movePages.call(this, page, 1);
  
        // Increase the number of pages
        if (incPages)
          data.totalPages = lastPage;
  
        // Add element
        data.pageObjs[page] = $(element).
          css({'float': 'left'}).
          addClass('page p' + page + className);
  
        if (!hasHardPage() &&  data.pageObjs[page].hasClass('hard')) {
          data.pageObjs[page].removeClass('hard');
        }
  
        // Add page
        turnMethods._addPage.call(this, page);
  
        // Remove pages out of range
        turnMethods._removeFromDOM.call(this);
      }
  
      return this;
    },
  
    // Adds a page
  
    _addPage: function(page) {
      
      var data = this.data(),
        element = data.pageObjs[page];
  
      if (element)
        if (turnMethods._necessPage.call(this, page)) {
  
          if (!data.pageWrap[page]) {
  
            // Wrapper
            data.pageWrap[page] = $('<div/>',
              {'class': 'page-wrapper',
                page: page,
                css: {position: 'absolute',
                overflow: 'hidden'}});
  
            // Append to this flipbook
            this.append(data.pageWrap[page]);
  
            if (!data.pagePlace[page]) {
              
              data.pagePlace[page] = page;
              // Move `pageObjs[page]` to wrapper
              data.pageObjs[page].appendTo(data.pageWrap[page]);
            
           }
  
            // Set the size of the page
            var prop = turnMethods._pageSize.call(this, page, true);
            element.css({width: prop.width, height: prop.height});
            data.pageWrap[page].css(prop);
  
          }
  
          if (data.pagePlace[page] == page) {
  
           // If the page isn't in another place, create the flip effect
            turnMethods._makeFlip.call(this, page);
  
        }
          
        } else {
  
          // Place
          data.pagePlace[page] = 0;
  
          // Remove element from the DOM
          if (data.pageObjs[page])
            data.pageObjs[page].remove();
  
        }
  
    },
  
    // Checks if a page is in memory
    
    hasPage: function(page) {
  
      return has(page, this.data().pageObjs);
    
    },
  
    // Centers the flipbook
  
    center: function(page) {
      
      var data = this.data(),
        size = $(this).turn('size'),
        left = 0;
  
      if (!data.noCenter) {
        if (data.display=='double') {
          var view = this.turn('view', page || data.tpage || data.page);
  
          if (data.direction=='ltr') {
            if (!view[0])
              left -= size.width/4;
            else if (!view[1])
              left += size.width/4;
          } else {
            if (!view[0])
              left += size.width/4;
            else if (!view[1])
              left -= size.width/4;
          }
        
        }
  
        $(this).css({marginLeft: left});
      }
  
      return this;
  
    },
  
    // Destroys the flipbook
  
    destroy: function () {
  
      var page,
        flipbook = this,
        data = this.data(),
        events = [
          'end', 'first', 'flip', 'last', 'pressed',
          'released', 'start', 'turning', 'turned',
          'zooming', 'missing'];
  
      if (trigger('destroying', this)=='prevented')
        return;
  
      data.destroying = true;
  
      $.each(events, function(index, eventName) {
        flipbook.unbind(eventName);
      });
  
      this.parent().unbind('start', data.eventHandlers.start);
  
      $(document).unbind(mouseEvents.move, data.eventHandlers.touchMove).
        unbind(mouseEvents.up, data.eventHandlers.touchEnd);
      
      while (data.totalPages!==0) {
        this.turn('removePage', data.totalPages);
      }
  
      if (data.fparent)
        data.fparent.remove();
  
      if (data.shadow)
        data.shadow.remove();
  
      this.removeData();
      data = null;
  
      return this;
  
    },
  
    // Checks if this element is a flipbook
  
    is: function() {
  
      return typeof(this.data().pages)=='object';
  
    },
  
    // Sets and gets the zoom value
  
    zoom: function(newZoom) {
      
      var data = this.data();
  
      if (typeof(newZoom)=='number') {
  
        if (newZoom<0.001 || newZoom>100)
          throw turnError(newZoom+ ' is not a value for zoom');
        
        if (trigger('zooming', this, [newZoom, data.zoom])=='prevented')
          return this;
        
        var size = this.turn('size'),
          currentView = this.turn('view'),
          iz = 1/data.zoom,
          newWidth = Math.round(size.width * iz * newZoom),
          newHeight = Math.round(size.height * iz * newZoom);
      
        data.zoom = newZoom;
  
        $(this).turn('stop').
          turn('size', newWidth, newHeight);
          /*.
          css({marginTop: size.height * iz / 2 - newHeight / 2});*/
  
        if (data.opts.autoCenter)
          this.turn('center');
        /*else
          $(this).css({marginLeft: size.width * iz / 2 - newWidth / 2});*/
  
        turnMethods._updateShadow.call(this);
  
        for (var i = 0; i<currentView.length; i++) {
          if (currentView[i] && data.pageZoom[currentView[i]]!=data.zoom) {
    
            this.trigger('zoomed',[
              currentView[i],
              currentView,
              data.pageZoom[currentView[i]],
              data.zoom]);
  
            data.pageZoom[currentView[i]] = data.zoom;
        }
      }
  
        return this;
  
      } else
        return data.zoom;
  
    },
  
    // Gets the size of a page
  
    _pageSize: function(page, position) {
  
      var data = this.data(),
        prop = {};
  
      if (data.display=='single') {
  
        prop.width = this.width();
        prop.height = this.height();
  
        if (position) {
          prop.top = 0;
          prop.left = 0;
          prop.right = 'auto';
        }
  
      } else {
  
        var pageWidth = this.width()/2,
          pageHeight = this.height();
  
        if (data.pageObjs[page].hasClass('own-size')) {
          prop.width = data.pageObjs[page].width();
          prop.height = data.pageObjs[page].height();
        } else {
          prop.width = pageWidth;
          prop.height = pageHeight;
        }
        
        if (position) {
          var odd = page%2;
          prop.top = (pageHeight-prop.height)/2;
  
          if (data.direction=='ltr') {
            
            prop[(odd) ? 'right' : 'left'] = pageWidth-prop.width;
            prop[(odd) ? 'left' : 'right'] = 'auto';
  
          } else {
            
            prop[(odd) ? 'left' : 'right'] = pageWidth-prop.width;
            prop[(odd) ? 'right' : 'left'] = 'auto';
  
          }
        
        }
      }
  
      return prop;
  
    },
  
    // Prepares the flip effect for a page
  
    _makeFlip: function(page) {
  
      var data = this.data();
  
      if (!data.pages[page] && data.pagePlace[page]==page) {
        
        var single = data.display=='single',
          odd = page%2;
  
        data.pages[page] = data.pageObjs[page].
          css(turnMethods._pageSize.call(this, page)).
          flip({
            page: page,
            next: (odd || single) ? page+1 : page-1,
            turn: this
          }).
          flip('disable', data.disabled);
  
          // Issue about z-index
          turnMethods._setPageLoc.call(this, page);
  
          data.pageZoom[page] = data.zoom;
          
      }
  
      return data.pages[page];
    },
  
    // Makes pages within a range
  
    _makeRange: function() {
  
      var page, range,
        data = this.data();
  
      if (data.totalPages<1)
        return;
  
      range = this.turn('range');
  
      for (page = range[0]; page<=range[1]; page++)
        turnMethods._addPage.call(this, page);
  
    },
  
    // Returns a range of pages that should be in the DOM
    // Example:
    // - page in the current view, return true
    // * page is in the range, return true
    // Otherwise, return false
    //
    // 1 2-3 4-5 6-7 8-9 10-11 12-13
    //   **  **  --   **  **
  
    range: function(page) {
  
      var remainingPages, left, right, view,
        data = this.data();
  
        page = page || data.tpage || data.page || 1;
        view = turnMethods._view.call(this, page);
  
        if (page<1 || page>data.totalPages)
          throw turnError('"'+page+'" is not a valid page');
  
      
        view[1] = view[1] || view[0];
        
        if (view[0]>=1 && view[1]<=data.totalPages) {
  
          remainingPages = Math.floor((pagesInDOM-2)/2);
  
          if (data.totalPages-view[1] > view[0]) {
            left = Math.min(view[0]-1, remainingPages);
            right = 2*remainingPages-left;
          } else {
            right = Math.min(data.totalPages-view[1], remainingPages);
            left = 2*remainingPages-right;
          }
  
        } else {
          left = pagesInDOM-1;
          right = pagesInDOM-1;
        }
  
        return [Math.max(1, view[0]-left),
            Math.min(data.totalPages, view[1]+right)];
  
    },
  
    // Detects if a page is within the range of `pagesInDOM` from the current view
  
    _necessPage: function(page) {
      
      if (page===0)
        return true;
  
      var range = this.turn('range');
  
      return this.data().pageObjs[page].hasClass('fixed') ||
        (page>=range[0] && page<=range[1]);
      
    },
  
    // Releases memory by removing pages from the DOM
  
    _removeFromDOM: function() {
  
      var page, data = this.data();
  
      for (page in data.pageWrap)
        if (has(page, data.pageWrap) &&
          !turnMethods._necessPage.call(this, page))
        turnMethods._removePageFromDOM.call(this, page);
      
    },
  
    // Removes a page from DOM and its internal references
  
    _removePageFromDOM: function(page) {
  
      var data = this.data();
  
      if (data.pages[page]) {
        var dd = data.pages[page].data();
  
        flipMethods._moveFoldingPage.call(data.pages[page], false);
  
        if (dd.f && dd.f.fwrapper)
          dd.f.fwrapper.remove();
  
        data.pages[page].removeData();
        data.pages[page].remove();
        delete data.pages[page];
      }
  
      if (data.pageObjs[page])
        data.pageObjs[page].remove();
  
      if (data.pageWrap[page]) {
        data.pageWrap[page].remove();
        delete data.pageWrap[page];
      }
  
      turnMethods._removeMv.call(this, page);
  
      delete data.pagePlace[page];
      delete data.pageZoom[page];
  
    },
  
    // Removes a page
  
    removePage: function(page) {
  
      var data = this.data();
  
      // Delete all the pages
      if (page=='*') {
        
        while (data.totalPages!==0) {
          this.turn('removePage', data.totalPages);
        }
  
      } else {
  
        if (page<1 || page>data.totalPages)
          throw turnError('The page '+ page + ' doesn\'t exist');
          
        if (data.pageObjs[page]) {
  
          // Stop animations
          this.turn('stop');
  
          // Remove `page`
          turnMethods._removePageFromDOM.call(this, page);
  
          delete data.pageObjs[page];
  
        }
  
        // Move the pages
        turnMethods._movePages.call(this, page, -1);
  
        // Resize the size of this flipbook
        data.totalPages = data.totalPages-1;
  
        // Check the current view
  
        if (data.page>data.totalPages) {
  
         data.page = null;
         turnMethods._fitPage.call(this, data.totalPages);
  
        } else {
  
          turnMethods._makeRange.call(this);
          this.turn('update');
  
        }
      }
  
      return this;
    
    },
  
    // Moves pages
  
    _movePages: function(from, change) {
  
      var page,
        that = this,
        data = this.data(),
        single = data.display=='single',
        move = function(page) {
  
          var next = page + change,
            odd = next%2,
            className = (odd) ? ' odd ' : ' even ';
  
          if (data.pageObjs[page])
            data.pageObjs[next] = data.pageObjs[page].
              removeClass('p' + page + ' odd even').
              addClass('p' + next + className);
  
          if (data.pagePlace[page] && data.pageWrap[page]) {
  
            data.pagePlace[next] = next;
          
            if (data.pageObjs[next].hasClass('fixed'))
              data.pageWrap[next] = data.pageWrap[page].
                attr('page', next);
            else
              data.pageWrap[next] = data.pageWrap[page].
                css(turnMethods._pageSize.call(that, next, true)).
                attr('page', next);
        
              if (data.pages[page])
                data.pages[next] = data.pages[page].
                  flip('options', {
                    page: next,
                    next: (single || odd) ? next+1 : next-1
                  });
  
              if (change) {
                delete data.pages[page];
                delete data.pagePlace[page];
                delete data.pageZoom[page];
                delete data.pageObjs[page];
                delete data.pageWrap[page];
              }
  
          }
  
      };
  
      if (change>0)
        for (page=data.totalPages; page>=from; page--)
          move(page);
      else
        for (page=from; page<=data.totalPages; page++)
          move(page);
  
    },
  
    // Sets or Gets the display mode
  
    display: function(display) {
  
      var data = this.data(),
        currentDisplay = data.display;
  
      if (display===undefined) {
        
        return currentDisplay;
  
      } else {
  
        if ($.inArray(display, displays)==-1)
          throw turnError('"'+display + '" is not a value for display');
        
        switch(display) {
          case 'single':
  
            // Create a temporal page to use as folded page
  
            if (!data.pageObjs[0]) {
              this.turn('stop').
                css({'overflow': 'hidden'});
  
              data.pageObjs[0] = $('<div />',
                  {'class': 'page p-temporal'}).
                css({width: this.width(), height: this.height()}).
                appendTo(this);
            }
  
            this.addClass('shadow');
  
          break;
          case 'double':
  
            // Remove the temporal page
  
            if (data.pageObjs[0]) {
              this.turn('stop').css({'overflow': ''});
              data.pageObjs[0].remove();
              delete data.pageObjs[0];
            }
  
            this.removeClass('shadow');
  
          break;
        }
        
  
        data.display = display;
  
        if (currentDisplay) {
          var size = this.turn('size');
          turnMethods._movePages.call(this, 1, 0);
          this.turn('size', size.width, size.height).
            turn('update');
        }
  
        return this;
  
      }
    
    },
    
    // Gets and sets the direction of the flipbook
  
    direction: function(dir) {
  
      var data = this.data();
  
      if (dir===undefined) {
  
        return data.direction;
  
      } else {
  
        dir = dir.toLowerCase();
  
        if ($.inArray(dir, directions)==-1)
          throw turnError('"' + dir + '" is not a value for direction');
  
        if (dir=='rtl') {
          $(this).attr('dir', 'ltr').
            css({direction: 'ltr'});
        }
  
        data.direction = dir;
  
        if (data.done)
          this.turn('size', $(this).width(), $(this).height());
  
        return this;
      }
  
    },
  
    // Detects animation
  
    animating: function() {
  
      return this.data().pageMv.length>0;
  
    },
  
    // Gets the current activated corner
  
    corner: function() {
      
      var corner,
        page,
        data = this.data();
  
      for (page in data.pages) {
        if (has(page, data.pages))
          if ((corner = data.pages[page].flip('corner'))) {
            return corner;
          }
      }
  
      return false;
    },
  
    // Gets the data stored in the flipbook
  
    data: function() {
      
      return this.data();
  
    },
  
    // Disables and enables the effect
  
    disable: function(disable) {
  
      var page,
        data = this.data(),
        view = this.turn('view');
  
      data.disabled = disable===undefined || disable===true;
  
      for (page in data.pages) {
        if (has(page, data.pages))
          data.pages[page].flip('disable',
            (data.disabled) ? true : $.inArray(parseInt(page, 10), view)==-1);
      }
  
      return this;
  
    },
  
    // Disables and enables the effect
  
    disabled: function(disable) {
  
      if (disable===undefined) {
        return this.data().disabled===true;
      } else {
        return this.turn('disable', disable);
      }
  
    },
  
    // Gets and sets the size
  
    size: function(width, height) {
  
      if (width===undefined || height===undefined) {
        
        return {width: this.width(), height: this.height()};
  
      } else {
  
        this.turn('stop');
  
        var page, prop,
          data = this.data(),
          pageWidth = (data.display=='double') ? width/2 : width;
  
        this.css({width: width, height: height});
  
        if (data.pageObjs[0])
          data.pageObjs[0].css({width: pageWidth, height: height});
        
        for (page in data.pageWrap) {
          if (!has(page, data.pageWrap)) continue;
  
          prop = turnMethods._pageSize.call(this, page, true);
  
          data.pageObjs[page].css({width: prop.width, height: prop.height});
          data.pageWrap[page].css(prop);
          
          if (data.pages[page])
            data.pages[page].css({width: prop.width, height: prop.height});
        }
  
        this.turn('resize');
  
        return this;
  
      }
    },
  
    // Resizes each page
  
    resize: function() {
  
      var page, data = this.data();
  
      if (data.pages[0]) {
        data.pageWrap[0].css({left: -this.width()});
        data.pages[0].flip('resize', true);
      }
  
      for (page = 1; page <= data.totalPages; page++)
        if (data.pages[page])
          data.pages[page].flip('resize', true);
  
      turnMethods._updateShadow.call(this);
  
      if (data.opts.autoCenter)
        this.turn('center');
  
    },
  
    // Removes an animation from the cache
  
    _removeMv: function(page) {
  
      var i, data = this.data();
        
      for (i=0; i<data.pageMv.length; i++)
        if (data.pageMv[i]==page) {
          data.pageMv.splice(i, 1);
          return true;
        }
  
      return false;
  
    },
  
    // Adds an animation to the cache
    
    _addMv: function(page) {
  
      var data = this.data();
  
      turnMethods._removeMv.call(this, page);
      data.pageMv.push(page);
  
    },
  
    // Gets indexes for a view
  
    _view: function(page) {
    
      var data = this.data();
      
      page = page || data.page;
  
      if (data.display=='double')
        return (page%2) ? [page-1, page] : [page, page+1];
      else
        return [page];
  
    },
  
    // Gets a view
  
    view: function(page) {
  
      var data = this.data(),
        view = turnMethods._view.call(this, page);
  
      if (data.display=='double')
        return [(view[0]>0) ? view[0] : 0,
          (view[1]<=data.totalPages) ? view[1] : 0];
      else
        return [(view[0]>0 && view[0]<=data.totalPages) ? view[0] : 0];
  
    },
  
    // Stops animations
  
    stop: function(ignore, animate) {
  
      if (this.turn('animating')) {
    
        var i, opts, page,
          data = this.data();
  
        if (data.tpage) {
          data.page = data.tpage;
          delete data['tpage'];
        }
  
        for (i = 0; i<data.pageMv.length; i++) {
  
          if (!data.pageMv[i] || data.pageMv[i]===ignore)
            continue;
  
          page = data.pages[data.pageMv[i]];
          opts = page.data().f.opts;
  
          page.flip('hideFoldedPage', animate);
  
          if (!animate)
            flipMethods._moveFoldingPage.call(page, false);
  
          if (opts.force) {
            opts.next = (opts.page%2===0) ? opts.page-1 : opts.page+1;
            delete opts['force'];
          }
  
        }
      }
      
      this.turn('update');
  
      return this;
    },
  
    // Gets and sets the number of pages
  
    pages: function(pages) {
  
      var data = this.data();
  
      if (pages) {
  
        if (pages<data.totalPages) {
  
          for (var page = data.totalPages; page>pages; page--)
            this.turn('removePage', page);
  
        }
  
          data.totalPages = pages;
          turnMethods._fitPage.call(this, data.page);
  
        return this;
  
      } else
        return data.totalPages;
  
    },
  
    // Checks missing pages
  
    _missing : function(page) {
      
      var data = this.data();
  
      if (data.totalPages<1)
        return;
  
      var p,
          range = this.turn('range', page),
          missing = [];
  
      for (p = range[0]; p<=range[1]; p++) {
        if (!data.pageObjs[p])
          missing.push(p);
      }
  
      if (missing.length>0)
        this.trigger('missing', [missing]);
  
    },
  
    // Sets a page without effect
  
    _fitPage: function(page) {
  
      var data = this.data(),
        newView = this.turn('view', page);
  
      turnMethods._missing.call(this, page);
      
      if (!data.pageObjs[page])
        return;
  
      data.page = page;
    
      this.turn('stop');
  
      for (var i = 0; i<newView.length; i++) {
  
        if (newView[i] && data.pageZoom[newView[i]]!=data.zoom) {
    
          this.trigger('zoomed',[
            newView[i],
            newView,
            data.pageZoom[newView[i]],
            data.zoom]);
  
          data.pageZoom[newView[i]] = data.zoom;
  
        }
      }
  
      turnMethods._removeFromDOM.call(this);
      turnMethods._makeRange.call(this);
      turnMethods._updateShadow.call(this);
      this.trigger('turned', [page, newView]);
      this.turn('update');
  
      if (data.opts.autoCenter)
        this.turn('center');
  
    },
    
    // Turns the page
  
    _turnPage: function(page) {
  
      var current,
        next,
        data = this.data(),
        place = data.pagePlace[page],
        view = this.turn('view'),
        newView = this.turn('view', page);
  
  
      if (data.page!=page) {
  
        var currentPage = data.page;
  
        if (trigger('turning', this, [page, newView])=='prevented') {
  
          if (currentPage==data.page && $.inArray(place, data.pageMv)!=-1)
            data.pages[place].flip('hideFoldedPage', true);
          
          return;
  
        }
  
        if ($.inArray(1, newView)!=-1)
          this.trigger('first');
        if ($.inArray(data.totalPages, newView)!=-1)
          this.trigger('last');
  
      }
  
      if (data.display=='single') {
        current = view[0];
        next = newView[0];
      } else if (view[1] && page>view[1]) {
        current = view[1];
        next = newView[0];
      } else if (view[0] && page<view[0]) {
        current = view[0];
        next = newView[1];
      }
  
      var optsCorners = data.opts.turnCorners.split(','),
        flipData = data.pages[current].data().f,
        opts = flipData.opts,
        actualPoint = flipData.point;
  
      turnMethods._missing.call(this, page);
      
      if (!data.pageObjs[page])
        return;
  
      this.turn('stop');
  
      data.page = page;
  
      turnMethods._makeRange.call(this);
  
      data.tpage = next;
  
      if (opts.next!=next) {
        opts.next = next;
        opts.force = true;
      }
  
      this.turn('update');
  
      flipData.point = actualPoint;
      
      if (flipData.effect=='hard')
        if (data.direction=='ltr')
          data.pages[current].flip('turnPage',
            (page>current) ? 'r' : 'l');
        else
          data.pages[current].flip('turnPage',
            (page>current) ? 'l' : 'r');
      else {
        if (data.direction=='ltr')
          data.pages[current].flip('turnPage',
            optsCorners[(page>current) ? 1 : 0]);
        else
          data.pages[current].flip('turnPage',
            optsCorners[(page>current) ? 0 : 1]);
      }
  
    },
  
    // Gets and sets a page
  
    page: function(page) {
  
      var data = this.data();
  
      if (page===undefined) {
        
        return data.page;
  
      } else {
  
        if (!data.disabled && !data.destroying) {
  
          page = parseInt(page, 10);
  
          if (page>0 && page<=data.totalPages) {
  
            if (page!=data.page) {
              if (!data.done || $.inArray(page, this.turn('view'))!=-1)
                turnMethods._fitPage.call(this, page);
              else
                turnMethods._turnPage.call(this, page);
            }
        
            return this;
  
          } else {
          
            throw turnError('The page ' + page + ' does not exist');
  
          }
  
        }
  
      }
  
    },
  
    // Turns to the next view
  
    next: function() {
  
      return this.turn('page', Math.min(this.data().totalPages,
        turnMethods._view.call(this, this.data().page).pop() + 1));
    
    },
  
    // Turns to the previous view
  
    previous: function() {
  
      return this.turn('page', Math.max(1,
        turnMethods._view.call(this, this.data().page).shift() - 1));
  
    },
  
    // Shows a peeling corner
  
    peel: function(corner, animate) {
      
      var data = this.data(),
        view = this.turn('view');
  
      animate = (animate===undefined) ? true : animate===true;
  
      if (corner===false) {
        
        this.turn('stop', null, animate);
  
      } else {
      
        if (data.display=='single') {
  
          data.pages[data.page].flip('peel', corner, animate);
  
        } else {
  
          var page;
  
          if (data.direction=='ltr') {
            
            page = (corner.indexOf('l')!=-1) ? view[0] : view[1];
  
          } else {
            
            page = (corner.indexOf('l')!=-1) ? view[1] : view[0];
  
          }
          
          if (data.pages[page])
            data.pages[page].flip('peel', corner, animate);
  
        }
      }
  
      return this;
  
    },
  
    // Adds a motion to the internal list
    // This event is called in context of flip
  
    _addMotionPage: function() {
  
      var opts = $(this).data().f.opts,
        turn = opts.turn,
        dd = turn.data();
  
      turnMethods._addMv.call(turn, opts.page);
  
    },
  
    // This event is called in context of flip
  
    _eventStart: function(e, opts, corner) {
  
      var data = opts.turn.data(),
        actualZoom = data.pageZoom[opts.page];
  
      if (e.isDefaultPrevented()) {
        turnMethods._updateShadow.call(opts.turn);
        return;
      }
  
      if (actualZoom && actualZoom!=data.zoom) {
        
        opts.turn.trigger('zoomed',[
          opts.page,
          opts.turn.turn('view', opts.page),
          actualZoom,
          data.zoom]);
  
        data.pageZoom[opts.page] = data.zoom;
  
      }
  
      if (data.display=='single' && corner) {
  
        if ((corner.charAt(1)=='l' && data.direction=='ltr') ||
          (corner.charAt(1)=='r' && data.direction=='rtl'))
        {
          
          opts.next = (opts.next<opts.page) ? opts.next : opts.page-1;
          opts.force = true;
  
        } else {
          
          opts.next = (opts.next>opts.page) ? opts.next : opts.page+1;
  
        }
  
      }
  
      turnMethods._addMotionPage.call(e.target);
      turnMethods._updateShadow.call(opts.turn);
    },
  
    // This event is called in context of flip
  
    _eventEnd: function(e, opts, turned) {
    
      var that = $(e.target),
        data = that.data().f,
        turn = opts.turn,
        dd = turn.data();
  
      if (turned) {
  
        var tpage = dd.tpage || dd.page;
      
        if (tpage==opts.next || tpage==opts.page) {
          delete dd.tpage;
  
          turnMethods._fitPage.call(turn, tpage || opts.next, true);
        }
  
      } else {
        
        turnMethods._removeMv.call(turn, opts.page);
        turnMethods._updateShadow.call(turn);
        turn.turn('update');
  
      }
      
    },
    
    // This event is called in context of flip
  
    _eventPressed: function(e) {
  
      var page,
        data = $(e.target).data().f,
        turn = data.opts.turn,
        turnData = turn.data(),
        pages = turnData.pages;
      
      turnData.mouseAction = true;
  
      turn.turn('update');
  
      return data.time = new Date().getTime();
  
    },
  
    // This event is called in context of flip
  
    _eventReleased: function(e, point) {
  
      var outArea,
        page = $(e.target),
        data = page.data().f,
        turn = data.opts.turn,
        turnData = turn.data();
      
      if (turnData.display=='single') {
        outArea = (point.corner=='br' || point.corner=='tr') ?
          point.x<page.width()/2:
          point.x>page.width()/2;
      } else {
        outArea = point.x<0 || point.x>page.width();
      }
  
      if ((new Date()).getTime()-data.time<200 || outArea) {
  
        e.preventDefault();
        turnMethods._turnPage.call(turn, data.opts.next);
  
      }
  
      turnData.mouseAction = false;
  
    },
  
    // This event is called in context of flip
    
    _flip: function(e) {
  
      e.stopPropagation();
  
      var opts = $(e.target).data().f.opts;
  
      opts.turn.trigger('turn', [opts.next]);
  
      if (opts.turn.data().opts.autoCenter) {
        opts.turn.turn('center', opts.next);
      }
  
    },
  
   //
    _touchStart: function() {
      var data = this.data();
      for (var page in data.pages) {
        if (has(page, data.pages) &&
          flipMethods._eventStart.apply(data.pages[page], arguments)===false) {
            return false;
        }
      }
    },
    
    //
    _touchMove: function() {
      var data = this.data();
      for (var page in data.pages) {
        if (has(page, data.pages)) {
          flipMethods._eventMove.apply(data.pages[page], arguments);
        }
      }
    },
  
    //
    _touchEnd: function() {
      var data = this.data();
      for (var page in data.pages) {
        if (has(page, data.pages)) {
          flipMethods._eventEnd.apply(data.pages[page], arguments);
        }
      }
    },
  
    // Calculate the z-index value for pages during the animation
  
    calculateZ: function(mv) {
  
      var i, page, nextPage, placePage, dpage,
        that = this,
        data = this.data(),
        view = this.turn('view'),
        currentPage = view[0] || view[1],
        total = mv.length-1,
        r = {pageZ: {}, partZ: {}, pageV: {}},
  
        addView = function(page) {
          var view = that.turn('view', page);
          if (view[0]) r.pageV[view[0]] = true;
          if (view[1]) r.pageV[view[1]] = true;
        };
      
      for (i = 0; i<=total; i++) {
        page = mv[i];
        nextPage = data.pages[page].data().f.opts.next;
        placePage = data.pagePlace[page];
        addView(page);
        addView(nextPage);
        dpage = (data.pagePlace[nextPage]==nextPage) ? nextPage : page;
        r.pageZ[dpage] = data.totalPages - Math.abs(currentPage-dpage);
        r.partZ[placePage] = data.totalPages*2 -  total + i;
      }
  
      return r;
    },
  
    // Updates the z-index and display property of every page
  
    update: function() {
  
      var page,
        data = this.data();
  
      if (this.turn('animating') && data.pageMv[0]!==0) {
  
        // Update motion
  
        var p, apage, fixed,
          pos = this.turn('calculateZ', data.pageMv),
          corner = this.turn('corner'),
          actualView = this.turn('view'),
          newView = this.turn('view', data.tpage);
    
        for (page in data.pageWrap) {
  
          if (!has(page, data.pageWrap))
            continue;
  
          fixed = data.pageObjs[page].hasClass('fixed');
  
          data.pageWrap[page].css({
            display: (pos.pageV[page] || fixed) ? '' : 'none',
            zIndex:
              (data.pageObjs[page].hasClass('hard') ?
                pos.partZ[page]
                :
                pos.pageZ[page]
              ) || (fixed ? -1 : 0)
          });
  
          if ((p = data.pages[page])) {
  
            p.flip('z', pos.partZ[page] || null);
  
            if (pos.pageV[page])
              p.flip('resize');
            
            if (data.tpage) { // Is it turning the page to `tpage`?
  
              p.flip('hover', false).
                flip('disable',
                  $.inArray(parseInt(page, 10), data.pageMv)==-1 &&
                  page!=newView[0] &&
                  page!=newView[1]);
  
            } else {
  
              p.flip('hover', corner===false).
                flip('disable', page!=actualView[0] && page!=actualView[1]);
  
            }
  
          }
  
        }
  
      } else {
  
        // Update static pages
  
        for (page in data.pageWrap) {
  
          if (!has(page, data.pageWrap))
            continue;
  
          var pageLocation = turnMethods._setPageLoc.call(this, page);
  
          if (data.pages[page]) {
            data.pages[page].
              flip('disable', data.disabled || pageLocation!=1).
              flip('hover', true).
              flip('z', null);
          }
        }
      }
  
      return this;
    },
  
    // Updates the position and size of the flipbook's shadow
  
    _updateShadow: function() {
      
      var view, view2, shadow,
        data = this.data(),
        width = this.width(),
        height = this.height(),
        pageWidth = (data.display=='single') ? width : width/2;
  
      view = this.turn('view');
  
      if (!data.shadow) {
        data.shadow = $('<div />', {
            'class': 'shadow',
            'css': divAtt(0, 0, 0).css
          }).
          appendTo(this);
      }
  
      for (var i = 0; i<data.pageMv.length; i++) {
        if (!view[0] || !view[1])
          break;
      
        view = this.turn('view', data.pages[data.pageMv[i]].data().f.opts.next);
        view2 = this.turn('view', data.pageMv[i]);
  
        view[0] = view[0] && view2[0];
        view[1] = view[1] && view2[1];
      }
  
      if (!view[0]) shadow = (data.direction=='ltr') ? 1 : 2;
      else if (!view[1]) shadow = (data.direction=='ltr') ? 2 : 1;
      else shadow = 3;
  
      switch (shadow) {
        case 1:
          data.shadow.css({
            width: pageWidth,
            height: height,
            top: 0,
            left: pageWidth
          });
          break;
        case 2:
          data.shadow.css({
            width: pageWidth,
            height: height,
            top: 0,
            left: 0
          });
          break;
        case 3:
          data.shadow.css({
            width: width,
            height: height,
            top: 0,
            left: 0
          });
          break;
      }
  
    },
  
    // Sets the z-index and display property of a page
    // It depends on the current view
  
    _setPageLoc: function(page) {
  
      var data = this.data(),
        view = this.turn('view'),
        loc = 0;
  
      
      if (page==view[0] || page==view[1])
        loc = 1;
      else if (
        (data.display=='single' && page==view[0]+1) ||
        (data.display=='double' && page==view[0]-2 || page==view[1]+2)
      )
        loc = 2;
  
      if (!this.turn('animating'))
        switch (loc) {
          case 1:
            data.pageWrap[page].css(
            {
              zIndex: data.totalPages,
              display: ''
            });
          break;
          case 2:
            data.pageWrap[page].css(
            {
              zIndex: data.totalPages-1,
              display: ''
            });
          break;
          case 0:
            data.pageWrap[page].css(
            {
              zIndex: 0,
              display: (data.pageObjs[page].hasClass('fixed')) ? '' : 'none'}
            );
          break;
        }
      
      return loc;
    },
  
    // Gets and sets the options
  
    options: function(options) {
      
      if (options===undefined) {
        
        return this.data().opts;
  
      } else {
  
        var data = this.data();
  
        // Set new values
  
        $.extend(data.opts, options);
        
        // Set pages
  
        if (options.pages)
          this.turn('pages', options.pages);
  
        // Set page
  
        if (options.page)
          this.turn('page', options.page);
  
        // Set display
  
        if (options.display)
          this.turn('display', options.display);
        
        // Set direction
  
        if (options.direction)
          this.turn('direction', options.direction);
  
        // Set size
  
        if (options.width && options.height)
          this.turn('size', options.width, options.height);
        
        // Add event listeners
  
        if (options.when)
          for (var eventName in options.when)
            if (has(eventName, options.when)) {
              this.unbind(eventName).
                bind(eventName, options.when[eventName]);
            }
  
        return this;
      }
  
    },
  
    // Gets the current version
  
    version: function() {
  
      return version;
  
    }
  },
  
  // Methods and properties for the flip page effect
  
  flipMethods = {
  
    // Constructor
  
    init: function(opts) {
  
      this.data({f: {
        disabled: false,
        hover: false,
        effect: (this.hasClass('hard')) ? 'hard' : 'sheet'
      }});
    
      this.flip('options', opts);
  
      flipMethods._addPageWrapper.call(this);
  
      return this;
    },
  
    setData: function(d) {
      
      var data = this.data();
  
      data.f = $.extend(data.f, d);
  
      return this;
    },
  
    options: function(opts) {
      
      var data = this.data().f;
  
      if (opts) {
        flipMethods.setData.call(this,
          {opts: $.extend({}, data.opts || flipOptions, opts)});
        return this;
      } else
        return data.opts;
  
    },
  
    z: function(z) {
      
      var data = this.data().f;
  
      data.opts['z-index'] = z;
  
      if (data.fwrapper)
        data.fwrapper.css({
          zIndex: z || parseInt(data.parent.css('z-index'), 10) || 0
        });
  
      return this;
    },
  
    _cAllowed: function() {
      
      var data = this.data().f,
        page = data.opts.page,
        turnData = data.opts.turn.data(),
        odd = page%2;
      
      if (data.effect=='hard') {
      
        return (turnData.direction=='ltr') ?
          [(odd) ? 'r' : 'l'] :
          [(odd) ? 'l' : 'r'];
  
      } else {
  
        if (turnData.display=='single') {
  
          if (page==1)
            return (turnData.direction=='ltr') ?
              corners['forward'] : corners['backward'];
          else if (page==turnData.totalPages)
            return (turnData.direction=='ltr') ?
              corners['backward'] : corners['forward'];
          else
            return corners['all'];
  
        } else {
  
          return (turnData.direction=='ltr') ?
            corners[(odd) ? 'forward' : 'backward']
            :
            corners[(odd) ? 'backward' : 'forward'];
  
        }
  
      }
  
    },
  
    _cornerActivated: function(p) {
  
      var data = this.data().f,
        width = this.width(),
        height = this.height(),
        point = {x: p.x, y: p.y, corner: ''},
        csz = data.opts.cornerSize;
  
      if (point.x<=0 || point.y<=0 || point.x>=width || point.y>=height)
        return false;
  
      var allowedCorners = flipMethods._cAllowed.call(this);
  
      switch (data.effect) {
        case 'hard':
          
          if (point.x>width-csz)
            point.corner = 'r';
          else if (point.x<csz)
            point.corner = 'l';
          else
            return false;
              
          break;
  
        case 'sheet':
          
          if (point.y<csz)
            point.corner+= 't';
          else if (point.y>=height-csz)
            point.corner+= 'b';
          else
            return false;
      
          if (point.x<=csz)
            point.corner+= 'l';
          else if (point.x>=width-csz)
            point.corner+= 'r';
          else
            return false;
       
          break;
        }
  
      return (!point.corner || $.inArray(point.corner, allowedCorners)==-1) ?
        false : point;
  
    },
  
    _isIArea: function(e) {
  
      var pos = this.data().f.parent.offset();
  
      e = (isTouch && e.originalEvent) ? e.originalEvent.touches[0] : e;
  
      return flipMethods._cornerActivated.call(this,
        {
          x: e.pageX-pos.left,
          y: e.pageY-pos.top
        });
  
    },
  
    _c: function(corner, opts) {
  
      opts = opts || 0;
  
      switch (corner) {
        case 'tl':
          return point2D(opts, opts);
        case 'tr':
          return point2D(this.width()-opts, opts);
        case 'bl':
          return point2D(opts, this.height()-opts);
        case 'br':
          return point2D(this.width()-opts, this.height()-opts);
        case 'l':
          return point2D(opts, 0);
        case 'r':
          return point2D(this.width()-opts, 0);
      }
  
    },
  
    _c2: function(corner) {
  
      switch (corner) {
        case 'tl':
          return point2D(this.width()*2, 0);
        case 'tr':
          return point2D(-this.width(), 0);
        case 'bl':
          return point2D(this.width()*2, this.height());
        case 'br':
          return point2D(-this.width(), this.height());
        case 'l':
          return point2D(this.width()*2, 0);
        case 'r':
          return point2D(-this.width(), 0);
      }
  
    },
  
    _foldingPage: function() {
  
      var data = this.data().f;
  
      if (!data)
        return;
  
      var opts = data.opts;
  
      if (opts.turn) {
        data = opts.turn.data();
        if (data.display == 'single')
          return (opts.next>1 || opts.page>1) ? data.pageObjs[0] : null;
        else
          return data.pageObjs[opts.next];
      }
  
    },
  
    _backGradient: function() {
  
      var data = this.data().f,
        turnData = data.opts.turn.data(),
        gradient =  turnData.opts.gradients && (turnData.display=='single' ||
           (data.opts.page!=2 && data.opts.page!=turnData.totalPages-1));
  
      if (gradient && !data.bshadow)
        data.bshadow = $('<div/>', divAtt(0, 0, 1)).
          css({'position': '', width: this.width(), height: this.height()}).
          appendTo(data.parent);
  
      return gradient;
  
    },
  
    type: function () {
      
      return this.data().f.effect;
  
    },
  
    resize: function(full) {
      
      var data = this.data().f,
        turnData = data.opts.turn.data(),
        width = this.width(),
        height = this.height();
  
      switch (data.effect) {
        case 'hard':
          
        if (full) {
          data.wrapper.css({width: width, height: height});
          data.fpage.css({width: width, height: height});
          if (turnData.opts.gradients) {
            data.ashadow.css({width: width, height: height});
            data.bshadow.css({width: width, height: height});
          }
        }
  
        break;
        case 'sheet':
  
        if (full) {
          var size = Math.round(Math.sqrt(Math.pow(width, 2)+Math.pow(height, 2)));
  
          data.wrapper.css({width: size, height: size});
          data.fwrapper.css({width: size, height: size}).
            children(':first-child').
            css({width: width, height: height});
  
          data.fpage.css({width: width, height: height});
  
          if (turnData.opts.gradients)
            data.ashadow.css({width: width, height: height});
  
          if (flipMethods._backGradient.call(this))
            data.bshadow.css({width: width, height: height});
        }
  
        if (data.parent.is(':visible')) {
          var offset = findPos(data.parent[0]);
  
          data.fwrapper.css({top: offset.top,
            left: offset.left});
  
          //if (data.opts.turn) {
           offset = findPos(data.opts.turn[0]);
           data.fparent.css({top: -offset.top, left: -offset.left});
          //}
        }
  
        this.flip('z', data.opts['z-index']);
  
        break;
      }
  
    },
  
    // Prepares the page by adding a general wrapper and another objects
  
    _addPageWrapper: function() {
  
      var att,
        data = this.data().f,
        turnData = data.opts.turn.data(),
        parent = this.parent();
  
      data.parent = parent;
  
    if (!data.wrapper)
      switch (data.effect) {
        case 'hard':
          
          var cssProperties = {};
          cssProperties[vendor + 'transform-style'] = 'preserve-3d';
          cssProperties[vendor + 'backface-visibility'] = 'hidden';
  
          data.wrapper = $('<div/>', divAtt(0, 0, 2)).
            css(cssProperties).
            appendTo(parent).
            prepend(this);
  
          data.fpage = $('<div/>', divAtt(0, 0, 1)).
            css(cssProperties).
            appendTo(parent);
          
          if (turnData.opts.gradients) {
            data.ashadow = $('<div/>', divAtt(0, 0,  0)).
              hide().
              appendTo(parent);
  
            data.bshadow = $('<div/>', divAtt(0, 0,  0));
          }
  
        break;
        case 'sheet':
          
          var width = this.width(),
            height = this.height(),
            size = Math.round(Math.sqrt(Math.pow(width, 2)+Math.pow(height, 2)));
          
          data.fparent = data.opts.turn.data().fparent;
  
          if (!data.fparent) {
            var fparent = $('<div/>', {css: {'pointer-events': 'none'}}).hide();
              fparent.data().flips = 0;
              fparent.css(divAtt(0, 0, 'auto', 'visible').css).
              appendTo(data.opts.turn);
              
              data.opts.turn.data().fparent = fparent;
              data.fparent = fparent;
          }
  
          this.css({position: 'absolute', top: 0, left: 0, bottom: 'auto', right: 'auto'});
  
          data.wrapper = $('<div/>', divAtt(0, 0, this.css('z-index'))).
            appendTo(parent).
            prepend(this);
  
          data.fwrapper = $('<div/>', divAtt(parent.offset().top, parent.offset().left)).
            hide().
            appendTo(data.fparent);
  
          data.fpage = $('<div/>', divAtt(0, 0, 0, 'visible')).
            css({cursor: 'default'}).
            appendTo(data.fwrapper);
  
          if (turnData.opts.gradients)
            data.ashadow = $('<div/>', divAtt(0, 0,  1)).
            appendTo(data.fpage);
  
          flipMethods.setData.call(this, data);
  
        break;
      }
  
      // Set size
      flipMethods.resize.call(this, true);
  
    },
  
    // Takes a 2P point from the screen and applies the transformation
  
    _fold: function(point) {
  
      var data = this.data().f,
        turnData = data.opts.turn.data(),
        o = flipMethods._c.call(this, point.corner),
        width = this.width(),
        height = this.height();
  
      switch (data.effect) {
  
        case 'hard':
  
          if (point.corner=='l')
            point.x = Math.min(Math.max(point.x, 0), width*2);
          else
            point.x = Math.max(Math.min(point.x, width), -width);
  
          var leftPos,
            shadow,
            gradientX,
            fpageOrigin,
            parentOrigin,
            totalPages = turnData.totalPages,
            zIndex = data.opts['z-index'] || totalPages,
            parentCss = {'overflow': 'visible'},
            relX = (o.x) ? (o.x - point.x)/width : point.x/width,
            angle = relX * 90,
            half = angle<90;
  
          switch (point.corner) {
            case 'l':
  
              fpageOrigin =  '0% 50%';
              parentOrigin =  '100% 50%';
  
              if (half) {
                leftPos = 0;
                shadow = data.opts.next-1>0;
                gradientX = 1;
              } else {
                leftPos = '100%';
                shadow = data.opts.page+1<totalPages;
                gradientX = 0;
              }
  
            break;
            case 'r':
  
              fpageOrigin =  '100% 50%';
              parentOrigin =  '0% 50%';
              angle = -angle;
              width = -width;
  
              if (half) {
                leftPos = 0;
                shadow = data.opts.next+1<totalPages;
                gradientX = 0;
              } else {
                leftPos = '-100%';
                shadow = data.opts.page!=1;
                gradientX = 1;
              }
  
            break;
          }
  
          parentCss[vendor+'perspective-origin'] = parentOrigin;
  
          data.wrapper.transform('rotateY('+angle+'deg)' +
            'translate3d(0px, 0px, '+(this.attr('depth')||0)+'px)', parentOrigin);
  
          data.fpage.transform('translateX('+width+'px) rotateY('+(180+angle)+'deg)', fpageOrigin);
  
          data.parent.css(parentCss);
  
          if (half) {
            relX = -relX+1;
            data.wrapper.css({zIndex: zIndex+1});
            data.fpage.css({zIndex: zIndex});
          } else {
            relX = relX-1;
            data.wrapper.css({zIndex: zIndex});
            data.fpage.css({zIndex: zIndex+1});
          }
  
          if (turnData.opts.gradients) {
            if (shadow)
              data.ashadow.css({
                display: '',
                left: leftPos,
                backgroundColor: 'rgba(0,0,0,'+(0.5*relX)+')'
              }).
              transform('rotateY(0deg)');
            else
              data.ashadow.hide();
  
            data.bshadow.css({opacity:-relX + 1});
  
            if (half) {
              if (data.bshadow.parent()[0]!=data.wrapper[0]) {
                data.bshadow.appendTo(data.wrapper);
              }
            } else {
              if (data.bshadow.parent()[0]!=data.fpage[0]) {
                data.bshadow.appendTo(data.fpage);
              }
            }
            /*data.bshadow.css({
              backgroundColor: 'rgba(0,0,0,'+(0.1)+')'
            })*/
            gradient(data.bshadow, point2D(gradientX * 100, 0), point2D((-gradientX + 1)*100, 0),
              [[0, 'rgba(0,0,0,0.3)'],[1, 'rgba(0,0,0,0)']],2);
            
          }
  
          break;
        case 'sheet':
  
          var that = this,
            a = 0,
            alpha = 0,
            beta,
            px,
            gradientEndPointA,
            gradientEndPointB,
            gradientStartVal,
            gradientSize,
            gradientOpacity,
            shadowVal,
            mv = point2D(0, 0),
            df = point2D(0, 0),
            tr = point2D(0, 0),
            folding = flipMethods._foldingPage.call(this),
            tan = Math.tan(alpha),
            ac = turnData.opts.acceleration,
            h = data.wrapper.height(),
            top = point.corner.substr(0, 1) == 't',
            left = point.corner.substr(1, 1) == 'l',
  
        compute = function() {
  
          var rel = point2D(0, 0);
          var middle = point2D(0, 0);
  
          rel.x = (o.x) ? o.x - point.x : point.x;
  
          if (!hasRot) {
            rel.y = 0;
          } else {
            rel.y = (o.y) ? o.y - point.y : point.y;
          }
  
          middle.x = (left)? width - rel.x/2 : point.x + rel.x/2;
          middle.y = rel.y/2;
          
          var alpha =  A90-Math.atan2(rel.y, rel.x),
            gamma = alpha - Math.atan2(middle.y, middle.x),
            distance =  Math.max(0, Math.sin(gamma) * Math.sqrt(Math.pow(middle.x, 2) + Math.pow(middle.y, 2)));
            
            a = deg(alpha);
  
            tr = point2D(distance * Math.sin(alpha), distance * Math.cos(alpha));
  
            if (alpha > A90) {
              tr.x = tr.x + Math.abs(tr.y * rel.y/rel.x);
              tr.y = 0;
              if (Math.round(tr.x*Math.tan(PI-alpha)) < height) {
                point.y = Math.sqrt(Math.pow(height, 2)+2 * middle.x * rel.x);
                if (top) point.y =  height - point.y;
                return compute();
              }
            }
        
            if (alpha>A90) {
              var beta = PI-alpha, dd = h - height/Math.sin(beta);
              mv = point2D(Math.round(dd*Math.cos(beta)), Math.round(dd*Math.sin(beta)));
              if (left) mv.x = - mv.x;
              if (top) mv.y = - mv.y;
            }
  
            px = Math.round(tr.y/Math.tan(alpha) + tr.x);
        
            var side = width - px,
              sideX = side*Math.cos(alpha*2),
              sideY = side*Math.sin(alpha*2);
              df = point2D(
                Math.round((left ? side -sideX : px+sideX)),
                Math.round((top) ? sideY : height - sideY));
            
          // Gradients
            if (turnData.opts.gradients) {
  
              gradientSize = side*Math.sin(alpha);
  
              var endingPoint = flipMethods._c2.call(that, point.corner),
               far = Math.sqrt(Math.pow(endingPoint.x-point.x, 2)+Math.pow(endingPoint.y-point.y, 2))/width;
  
              shadowVal = Math.sin(A90*((far>1) ? 2 - far : far));
  
              gradientOpacity = Math.min(far, 1);
  
             
                gradientStartVal = gradientSize>100 ? (gradientSize-100)/gradientSize : 0;
  
                gradientEndPointA = point2D(
                  gradientSize*Math.sin(alpha)/width*100,
                  gradientSize*Math.cos(alpha)/height*100);
             
  
                if (flipMethods._backGradient.call(that)) {
  
                  gradientEndPointB = point2D(
                    gradientSize*1.2*Math.sin(alpha)/width*100,
                    gradientSize*1.2*Math.cos(alpha)/height*100);
  
                  if (!left) gradientEndPointB.x = 100-gradientEndPointB.x;
                  if (!top) gradientEndPointB.y = 100-gradientEndPointB.y;
  
                }
  
            }
  
            tr.x = Math.round(tr.x);
            tr.y = Math.round(tr.y);
  
          return true;
        },
  
        transform = function(tr, c, x, a) {
        
          var f = ['0', 'auto'], mvW = (width-h)*x[0]/100, mvH = (height-h)*x[1]/100,
            cssA = {left: f[c[0]], top: f[c[1]], right: f[c[2]], bottom: f[c[3]]},
            cssB = {},
            aliasingFk = (a!=90 && a!=-90) ? (left ? -1 : 1) : 0,
            origin = x[0] + '% ' + x[1] + '%';
  
          that.css(cssA).
            transform(rotate(a) + translate(tr.x + aliasingFk, tr.y, ac), origin);
  
          data.fpage.css(cssA).transform(
            rotate(a) +
            translate(tr.x + df.x - mv.x - width*x[0]/100, tr.y + df.y - mv.y - height*x[1]/100, ac) +
            rotate((180/a - 2)*a),
            origin);
  
          data.wrapper.transform(translate(-tr.x + mvW-aliasingFk, -tr.y + mvH, ac) + rotate(-a), origin);
  
          data.fwrapper.transform(translate(-tr.x + mv.x + mvW, -tr.y + mv.y + mvH, ac) + rotate(-a), origin);
        
          if (turnData.opts.gradients) {
  
            if (x[0])
              gradientEndPointA.x = 100-gradientEndPointA.x;
  
            if (x[1])
              gradientEndPointA.y = (100-gradientEndPointA.y);
  
            cssB['box-shadow'] = '0 0 20px rgba(0,0,0,'+(0.5*shadowVal)+')';
            folding.css(cssB);
  
            gradient(data.ashadow,
                point2D(left?100:0, top?0:100),
                point2D(gradientEndPointA.x, gradientEndPointA.y),
                [[gradientStartVal, 'rgba(0,0,0,0)'],
                [((1-gradientStartVal)*0.8)+gradientStartVal, 'rgba(0,0,0,'+(0.2*gradientOpacity)+')'],
                [1, 'rgba(255,255,255,'+(0.2*gradientOpacity)+')']],
                3,
                alpha);
  
            if (flipMethods._backGradient.call(that))
              gradient(data.bshadow,
                  point2D(left?0:100, top?0:100),
                  point2D(gradientEndPointB.x, gradientEndPointB.y),
                  [[0.6, 'rgba(0,0,0,0)'],
                  [0.8, 'rgba(0,0,0,'+(0.3*gradientOpacity)+')'],
                  [1, 'rgba(0,0,0,0)']
                  ],
                  3);
          }
  
        };
  
        switch (point.corner) {
          case 'l' :
  
  
          break;
          case 'r' :
  
  
          break;
          case 'tl' :
            point.x = Math.max(point.x, 1);
            compute();
            transform(tr, [1,0,0,1], [100, 0], a);
          break;
          case 'tr' :
            point.x = Math.min(point.x, width-1);
            compute();
            transform(point2D(-tr.x, tr.y), [0,0,0,1], [0, 0], -a);
          break;
          case 'bl' :
            point.x = Math.max(point.x, 1);
            compute();
            transform(point2D(tr.x, -tr.y), [1,1,0,0], [100, 100], -a);
          break;
          case 'br' :
            point.x = Math.min(point.x, width-1);
            compute();
            transform(point2D(-tr.x, -tr.y), [0,1,1,0], [0, 100], a);
          break;
        }
  
      break;
    }
  
      data.point = point;
    
    },
  
    _moveFoldingPage: function(move) {
  
      var data = this.data().f;
  
      if (!data)
        return;
  
      var turn = data.opts.turn,
        turnData = turn.data(),
        place = turnData.pagePlace;
        
      if (move) {
  
        var nextPage = data.opts.next;
    
        if (place[nextPage]!=data.opts.page) {
  
          if (data.folding)
            flipMethods._moveFoldingPage.call(this, false);
  
          var folding = flipMethods._foldingPage.call(this);
          
          folding.appendTo(data.fpage);
          place[nextPage] = data.opts.page;
          data.folding = nextPage;
        }
  
        turn.turn('update');
  
      } else {
  
        if (data.folding) {
  
          if (turnData.pages[data.folding]) {
           
            // If we have flip available
  
            var flipData = turnData.pages[data.folding].data().f;
            
            turnData.pageObjs[data.folding].
              appendTo(flipData.wrapper);
  
          } else if (turnData.pageWrap[data.folding]) {
            
            // If we have the pageWrapper
  
            turnData.pageObjs[data.folding].
              appendTo(turnData.pageWrap[data.folding]);
  
          }
  
          if (data.folding in place) {
            place[data.folding] = data.folding;
          }
  
          delete data.folding;
  
        }
      }
    },
  
    _showFoldedPage: function(c, animate) {
  
      var folding = flipMethods._foldingPage.call(this),
        dd = this.data(),
        data = dd.f,
        visible = data.visible;
  
      if (folding) {
  
        if (!visible || !data.point || data.point.corner!=c.corner) {
  
          var corner = (
            data.status=='hover' ||
            data.status=='peel' ||
            data.opts.turn.data().mouseAction) ?
          c.corner : null;
  
          visible = false;
  
          if (trigger('start', this, [data.opts, corner])=='prevented')
            return false;
  
        }
  
        if (animate) {
          
          var that = this,
            point = (data.point && data.point.corner==c.corner) ?
            data.point : flipMethods._c.call(this, c.corner, 1);
        
          this.animatef({
            from: [point.x, point.y],
            to: [c.x, c.y],
            duration: 500,
            frame: function(v) {
              c.x = Math.round(v[0]);
              c.y = Math.round(v[1]);
              flipMethods._fold.call(that, c);
            }
          });
  
        } else  {
  
          flipMethods._fold.call(this, c);
  
          if (dd.effect && !dd.effect.turning)
            this.animatef(false);
  
        }
  
        if (!visible) {
  
          switch(data.effect) {
            case 'hard':
  
              data.visible = true;
              flipMethods._moveFoldingPage.call(this, true);
              data.fpage.show();
              if (data.opts.shadows)
                data.bshadow.show();
  
            break;
            case 'sheet':
  
              data.visible = true;
              data.fparent.show().data().flips++;
              flipMethods._moveFoldingPage.call(this, true);
              data.fwrapper.show();
              if (data.bshadow)
                data.bshadow.show();
  
            break;
          }
  
        }
  
        return true;
  
      }
  
      return false;
    },
  
    hide: function() {
  
      var data = this.data().f,
        turnData = data.opts.turn.data(),
        folding = flipMethods._foldingPage.call(this);
  
      switch (data.effect) {
        case 'hard':
          
          if (turnData.opts.gradients) {
            data.bshadowLoc = 0;
            data.bshadow.remove();
            data.ashadow.hide();
          }
  
          data.wrapper.transform('');
          data.fpage.hide();
  
        break;
        case 'sheet':
  
          if ((--data.fparent.data().flips)===0)
            data.fparent.hide();
  
          this.css({left: 0, top: 0, right: 'auto', bottom: 'auto'}).
            transform('');
  
          data.wrapper.transform('');
  
          data.fwrapper.hide();
  
          if (data.bshadow)
            data.bshadow.hide();
  
          folding.transform('');
  
        break;
      }
  
        data.visible = false;
  
      return this;
    },
  
    hideFoldedPage: function(animate) {
  
      var data = this.data().f;
  
      if (!data.point) return;
  
      var that = this,
        p1 = data.point,
        hide = function() {
          data.point = null;
          data.status = '';
          that.flip('hide');
          that.trigger('end', [data.opts, false]);
        };
  
      if (animate) {
  
        var p4 = flipMethods._c.call(this, p1.corner),
          top = (p1.corner.substr(0,1)=='t'),
          delta = (top) ? Math.min(0, p1.y-p4.y)/2 : Math.max(0, p1.y-p4.y)/2,
          p2 = point2D(p1.x, p1.y+delta),
          p3 = point2D(p4.x, p4.y-delta);
      
        this.animatef({
          from: 0,
          to: 1,
          frame: function(v) {
            var np = bezier(p1, p2, p3, p4, v);
            p1.x = np.x;
            p1.y = np.y;
            flipMethods._fold.call(that, p1);
          },
          complete: hide,
          duration: 800,
          hiding: true
        });
  
      } else {
  
        this.animatef(false);
        hide();
  
      }
    },
  
    turnPage: function(corner) {
  
      var that = this,
        data = this.data().f,
        turnData = data.opts.turn.data();
  
      corner = {corner: (data.corner) ?
        data.corner.corner :
        corner || flipMethods._cAllowed.call(this)[0]};
  
      var p1 = data.point ||
        flipMethods._c.call(this,
          corner.corner,
          (data.opts.turn) ? turnData.opts.elevation : 0),
        p4 = flipMethods._c2.call(this, corner.corner);
  
        this.trigger('flip').
          animatef({
            from: 0,
            to: 1,
            frame: function(v) {
  
              var np = bezier(p1, p1, p4, p4, v);
              corner.x = np.x;
              corner.y = np.y;
              flipMethods._showFoldedPage.call(that, corner);
  
            },
            complete: function() {
              
              that.trigger('end', [data.opts, true]);
  
            },
            duration: turnData.opts.duration,
            turning: true
          });
  
        data.corner = null;
    },
  
    moving: function() {
  
      return 'effect' in this.data();
    
    },
  
    isTurning: function() {
  
      return this.flip('moving') && this.data().effect.turning;
    
    },
  
    corner: function() {
      
      return this.data().f.corner;
        
    },
  
    _eventStart: function(e) {
  
      var data = this.data().f,
        turn = data.opts.turn;
  
      if (!data.corner && !data.disabled && !this.flip('isTurning') &&
        data.opts.page==turn.data().pagePlace[data.opts.page])
      {
  
        data.corner = flipMethods._isIArea.call(this, e);
  
        if (data.corner && flipMethods._foldingPage.call(this)) {
  
          this.trigger('pressed', [data.point]);
          flipMethods._showFoldedPage.call(this, data.corner);
  
          return false;
  
        } else
          data.corner = null;
  
      }
  
    },
  
    _eventMove: function(e) {
  
      var data = this.data().f;
  
      if (!data.disabled) {
  
        e = (isTouch) ? e.originalEvent.touches : [e];
  
        if (data.corner) {
  
          var pos = data.parent.offset();
          data.corner.x = e[0].pageX-pos.left;
          data.corner.y = e[0].pageY-pos.top;
          flipMethods._showFoldedPage.call(this, data.corner);
  
        } else if (data.hover && !this.data().effect && this.is(':visible')) {
  
          var point = flipMethods._isIArea.call(this, e[0]);
  
          if (point) {
  
            if ((data.effect=='sheet' && point.corner.length==2)  || data.effect=='hard') {
              data.status = 'hover';
              var origin = flipMethods._c.call(this, point.corner, data.opts.cornerSize/2);
              point.x = origin.x;
              point.y = origin.y;
              flipMethods._showFoldedPage.call(this, point, true);
            }
          
          } else {
            
            if (data.status=='hover') {
              data.status = '';
              flipMethods.hideFoldedPage.call(this, true);
            }
  
          }
  
        }
  
      }
  
    },
  
    _eventEnd: function() {
  
      var data = this.data().f,
        corner = data.corner;
  
      if (!data.disabled && corner) {
        if (trigger('released', this, [data.point || corner])!='prevented') {
          flipMethods.hideFoldedPage.call(this, true);
        }
      }
  
      data.corner = null;
  
    },
  
    disable: function(disable) {
  
      flipMethods.setData.call(this, {'disabled': disable});
      return this;
  
    },
  
    hover: function(hover) {
      
      flipMethods.setData.call(this, {'hover': hover});
      return this;
  
    },
  
    peel: function (corner, animate) {
  
      var data = this.data().f;
  
      if (corner) {
  
        if ($.inArray(corner, corners.all)==-1)
          throw turnError('Corner '+corner+' is not permitted');
  
        if ($.inArray(corner, flipMethods._cAllowed.call(this))!=-1) {
  
          var point = flipMethods._c.call(this, corner, data.opts.cornerSize/2);
          
          data.status = 'peel';
  
          flipMethods._showFoldedPage.call(this,
          {
            corner: corner,
            x: point.x,
            y: point.y
          }, animate);
  
        }
  
  
      } else {
  
        data.status = '';
  
        flipMethods.hideFoldedPage.call(this, animate);
        
      }
  
      return this;
    }
  };
  
  
  // Processes classes
  
  function dec(that, methods, args) {
  
    if (!args[0] || typeof(args[0])=='object')
      return methods.init.apply(that, args);
  
    else if (methods[args[0]])
      return methods[args[0]].apply(that, Array.prototype.slice.call(args, 1));
  
    else
      throw turnError(args[0] + ' is not a method or property');
  
  }
  
  
  // Attributes for a layer
  
  function divAtt(top, left, zIndex, overf) {
      
    return {'css': {
      position: 'absolute',
      top: top,
      left: left,
      'overflow': overf || 'hidden',
      zIndex: zIndex || 'auto'
    }
  };
        
  }
  
  // Gets a 2D point from a bezier curve of four points
  
  function bezier(p1, p2, p3, p4, t) {
  
    var a = 1 - t,
      b = a * a * a,
      c = t * t * t;
      
    return point2D(Math.round(b*p1.x + 3*t*a*a*p2.x + 3*t*t*a*p3.x + c*p4.x),
      Math.round(b*p1.y + 3*t*a*a*p2.y + 3*t*t*a*p3.y + c*p4.y));
  
  }
    
  // Converts an angle from degrees to radians
  
  function rad(degrees) {
    
    return degrees/180*PI;
  
  }
  
  // Converts an angle from radians to degrees
  
  function deg(radians) {
    
    return radians/PI*180;
  
  }
  
  // Gets a 2D point
  
  function point2D(x, y) {
    
    return {x: x, y: y};
  
  }
  
  // Webkit 534.3 on Android wrongly repaints elements that use overflow:hidden + rotation
  
  function rotationAvailable() {
    var parts;
  
    if ((parts = /AppleWebkit\/([0-9\.]+)/i.exec(navigator.userAgent))) {
      var webkitVersion = parseFloat(parts[1]);
      return (webkitVersion>534.3);
    } else {
      return true;
    }
  }
  
  // Returns the traslate value
  
  function translate(x, y, use3d) {
    
    return (has3d && use3d) ? ' translate3d(' + x + 'px,' + y + 'px, 0px) '
    : ' translate(' + x + 'px, ' + y + 'px) ';
  
  }
  
  // Returns the rotation value
  
  function rotate(degrees) {
    
    return ' rotate(' + degrees + 'deg) ';
  
  }
  
  // Checks if a property belongs to an object
  
  function has(property, object) {
    
    return Object.prototype.hasOwnProperty.call(object, property);
  
  }
  
  // Gets the CSS3 vendor prefix
  
  function getPrefix() {
  
    var vendorPrefixes = ['Moz','Webkit','Khtml','O','ms'],
    len = vendorPrefixes.length,
    vendor = '';
  
    while (len--)
      if ((vendorPrefixes[len] + 'Transform') in document.body.style)
        vendor='-'+vendorPrefixes[len].toLowerCase()+'-';
  
    return vendor;
  
  }
  
  // Detects the transitionEnd Event
  
  function getTransitionEnd() {
  
    var t,
      el = document.createElement('fakeelement'),
      transitions = {
        'transition':'transitionend',
        'OTransition':'oTransitionEnd',
        'MSTransition':'transitionend',
        'MozTransition':'transitionend',
        'WebkitTransition':'webkitTransitionEnd'
      };
  
    for (t in transitions) {
      if (el.style[t] !== undefined) {
        return transitions[t];
      }
    }
  }
  
  // Gradients
  
  function gradient(obj, p0, p1, colors, numColors) {
  
    var j, cols = [];
  
    if (vendor=='-webkit-') {
  
      for (j = 0; j<numColors; j++)
        cols.push('color-stop('+colors[j][0]+', '+colors[j][1]+')');
      
      obj.css({'background-image':
          '-webkit-gradient(linear, '+
          p0.x+'% '+
          p0.y+'%,'+
          p1.x+'% '+
          p1.y+'%, '+
          cols.join(',') + ' )'});
    } else {
      
      p0 = {x:p0.x/100 * obj.width(), y:p0.y/100 * obj.height()};
      p1 = {x:p1.x/100 * obj.width(), y:p1.y/100 * obj.height()};
  
      var dx = p1.x-p0.x,
        dy = p1.y-p0.y,
        angle = Math.atan2(dy, dx),
        angle2 = angle - Math.PI/2,
        diagonal = Math.abs(obj.width()*Math.sin(angle2))+Math.abs(obj.height()*Math.cos(angle2)),
        gradientDiagonal = Math.sqrt(dy*dy + dx*dx),
        corner = point2D((p1.x<p0.x) ? obj.width() : 0, (p1.y<p0.y) ? obj.height() : 0),
        slope = Math.tan(angle),
        inverse = -1/slope,
        x = (inverse*corner.x - corner.y - slope*p0.x + p0.y)/(inverse-slope),
        c = {x: x, y: inverse*x - inverse*corner.x + corner.y},
        segA = (Math.sqrt( Math.pow(c.x-p0.x,2) + Math.pow(c.y-p0.y,2)));
  
        for (j = 0; j<numColors; j++)
          cols.push(' '+colors[j][1]+' '+((segA + gradientDiagonal*colors[j][0])*100/diagonal)+'%');
  
        obj.css({'background-image': vendor+'linear-gradient(' + (-angle) + 'rad,' + cols.join(',') + ')'});
    }
  }
  
  
  // Triggers an event
  
  function trigger(eventName, context, args) {
  
    var event = $.Event(eventName);
    context.trigger(event, args);
    if (event.isDefaultPrevented())
      return 'prevented';
    else if (event.isPropagationStopped())
      return 'stopped';
    else
      return '';
  }
  
  // JS Errors
  
  function turnError(message) {
  
    function TurnJsError(message) {
      this.name = "TurnJsError";
      this.message = message;
    }
  
    TurnJsError.prototype = new Error();
    TurnJsError.prototype.constructor = TurnJsError;
    return new TurnJsError(message);
  
  }
  
  // Find the offset of an element ignoring its transformation
  
  function findPos(obj) {
  
    var offset = {top: 0, left: 0};
  
    do{
      offset.left += obj.offsetLeft;
      offset.top += obj.offsetTop;
    } while ((obj = obj.offsetParent));
  
    return offset;
  
  }
  
  // Checks if there's hard page compatibility
  // IE9 is the only browser that does not support hard pages
  
  function hasHardPage() {
    return (navigator.userAgent.indexOf('MSIE 9.0')==-1);
  }
  
  // Request an animation
  
  window.requestAnim = (function() {
    return window.requestAnimationFrame ||
      window.webkitRequestAnimationFrame ||
      window.mozRequestAnimationFrame ||
      window.oRequestAnimationFrame ||
      window.msRequestAnimationFrame ||
      function(callback) {
        window.setTimeout(callback, 1000 / 60);
      };
  
  })();
  
  // Extend $.fn
  
  $.extend($.fn, {
  
    flip: function() {
      return dec($(this[0]), flipMethods, arguments);
    },
  
    turn: function() {
      return dec($(this[0]), turnMethods, arguments);
    },
  
    transform: function(transform, origin) {
  
      var properties = {};
      
      if (origin)
        properties[vendor+'transform-origin'] = origin;
      
      properties[vendor+'transform'] = transform;
    
      return this.css(properties);
  
    },
  
    animatef: function(point) {
  
      var data = this.data();
  
      if (data.effect)
        data.effect.stop();
  
      if (point) {
  
        if (!point.to.length) point.to = [point.to];
        if (!point.from.length) point.from = [point.from];
  
        var diff = [],
          len = point.to.length,
          animating = true,
          that = this,
          time = (new Date()).getTime(),
          frame = function() {
  
            if (!data.effect || !animating)
              return;
  
            var v = [],
              timeDiff = Math.min(point.duration, (new Date()).getTime() - time);
  
            for (var i = 0; i < len; i++)
              v.push(data.effect.easing(1, timeDiff, point.from[i], diff[i], point.duration));
  
            point.frame((len==1) ? v[0] : v);
  
            if (timeDiff==point.duration) {
              delete data['effect'];
              that.data(data);
              if (point.complete)
                point.complete();
            } else {
              window.requestAnim(frame);
            }
          };
  
        for (var i = 0; i < len; i++)
          diff.push(point.to[i] - point.from[i]);
  
        data.effect = $.extend({
          stop: function() {
            animating = false;
          },
          easing: function (x, t, b, c, data) {
            return c * Math.sqrt(1 - (t=t/data-1)*t) + b;
          }
        }, point);
  
        this.data(data);
  
        frame();
  
      } else {
        
        delete data['effect'];
  
      }
    }
  });
  
  // Export some globals
  
  $.isTouch = isTouch;
  $.mouseEvents = mouseEvents;
  $.cssPrefix = getPrefix;
  $.cssTransitionEnd = getTransitionEnd;
  $.findPos = findPos;
  
  })(jQuery);
  